Decoherence of a qubit by non-Gaussian noise at an arbitrary working point

被引：42

作者：

Bergli, J.

Galperin, Y. M.

Altshuler, B. L.

机构：

[1] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

[2] Univ Oslo, Ctr Adv Mat & Nanotechnol, N-0316 Oslo, Norway

[3] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[4] Argonne Natl Lab, Argonne, IL 60439 USA

[5] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.74.024509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The decoherence of a qubit due to a classical non-Gaussian noise with correlation time longer than the decoherence time is discussed for arbitrary working points of the qubit. A method is developed that allows an exact formula for the phase-memory functional in the presence of independent random telegraph noise sources to be derived.

引用

页数：11

共 22 条

[1]

[Anonymous], QUANTUM PHENOMENA ME

[2] Quantum noise in the Josephson charge qubit [J].

Astafiev, O ;

Pashkin, YA ;

Nakamura, Y ;

Yamamoto, T ;

Tsai, JS .

PHYSICAL REVIEW LETTERS, 2004, 93 (26)

[3] Single-shot measurement of the Josephson charge qubit [J].

Astafiev, O ;

Pashkin, YA ;

Yamamoto, T ;

Nakamura, Y ;

Tsai, JS .

PHYSICAL REVIEW B, 2004, 69 (18) :180507-1

[4]

Cowan B., 1997, NUCL MAGNETIC RESONA

[5] Rigorous Born approximation and beyond for the spin-boson model [J].

DiVincenzo, DP ;

Loss, D .

PHYSICAL REVIEW B, 2005, 71 (03)

[6] Dynamical suppression of telegraph and 1/f noise due to quantum bistable fluctuators -: art. no. 040101 [J].

Falci, G ;

D'Arrigo, A ;

Mastellone, A ;

Paladino, E .

PHYSICAL REVIEW A, 2004, 70 (04) :040101-1

[7] Initial decoherence in solid state qubits [J].

Falci, G ;

D'Arrigo, A ;

Mastellone, A ;

Paladino, E .

PHYSICAL REVIEW LETTERS, 2005, 94 (16) :1-4

[8] Models of environment and T1 relaxation in Josephson charge qubits -: art. no. 046805 [J].

Faoro, L ;

Bergli, J ;

Altshuler, BL ;

Galperin, YM .

PHYSICAL REVIEW LETTERS, 2005, 95 (04)

[9]

Galperin Y. M., 2004, Fundamental Problems of Mesoscopic Physics

[10] Non-Gaussian low-frequency noise as a source of qubit decoherence [J].

Galperin, YM ;

Altshuler, BL ;

Bergli, J ;

Shantsev, DV .

PHYSICAL REVIEW LETTERS, 2006, 96 (09)

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